WO1999055239A1 - Apparatus and method for vascular embolization - Google Patents
Apparatus and method for vascular embolization Download PDFInfo
- Publication number
- WO1999055239A1 WO1999055239A1 PCT/US1999/007399 US9907399W WO9955239A1 WO 1999055239 A1 WO1999055239 A1 WO 1999055239A1 US 9907399 W US9907399 W US 9907399W WO 9955239 A1 WO9955239 A1 WO 9955239A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- embolic device
- rigid
- polymeric material
- elongate
- state
- Prior art date
Links
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- 230000010102 embolization Effects 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 27
- 230000003073 embolic effect Effects 0.000 claims abstract description 107
- 239000000463 material Substances 0.000 claims abstract description 94
- 210000004369 blood Anatomy 0.000 claims abstract description 20
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
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- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 14
- 239000004014 plasticizer Substances 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 11
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 229920001651 Cyanoacrylate Polymers 0.000 claims description 5
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 claims description 5
- 229940116333 ethyl lactate Drugs 0.000 claims description 5
- 229920002301 cellulose acetate Polymers 0.000 claims description 4
- 230000009969 flowable effect Effects 0.000 claims description 4
- 239000004200 microcrystalline wax Substances 0.000 claims description 4
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 4
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- 206010002329 Aneurysm Diseases 0.000 abstract description 70
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 102000008946 Fibrinogen Human genes 0.000 description 1
- 108010049003 Fibrinogen Proteins 0.000 description 1
- 201000008450 Intracranial aneurysm Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010053648 Vascular occlusion Diseases 0.000 description 1
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- 239000011872 intimate mixture Substances 0.000 description 1
- QRWOVIRDHQJFDB-UHFFFAOYSA-N isobutyl cyanoacrylate Chemical compound CC(C)COC(=O)C(=C)C#N QRWOVIRDHQJFDB-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 230000003966 vascular damage Effects 0.000 description 1
- 208000021331 vascular occlusion disease Diseases 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
- A61B17/12113—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/1214—Coils or wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12163—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a string of elements connected to each other
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12181—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices
- A61B17/12186—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices liquid materials adapted to be injected
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12181—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices
- A61B17/12195—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices comprising a curable material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
- A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
- A61B2017/12063—Details concerning the detachment of the occluding device from the introduction device electrolytically detachable
Definitions
- This invention relates generally to the field of vascular occlusion ⁇ devices and methods. More specifically, it relates to an apparatus and
- an aneurysm in the blood vessel.
- the balloon is carried into the aneurysm at the tip of the
- balloon-type embolization device can provide an
- liquid such as a cyanoacrylate resin, particularly isobutyl cyanoacrylate,
- DMSO dimethyl sulfoxide
- microcoils may be made of a ⁇ biocompatible metal alloy (typically platinum and tungsten) or a suitable metal alloy (typically platinum and tungsten) or a suitable metal alloy (typically platinum and tungsten) or a suitable metal alloy (typically platinum and tungsten) or a suitable metal alloy (typically platinum and tungsten) or a suitable metal alloy (typically platinum and tungsten) or a suitable metal alloy (typically platinum and tungsten) or a suitable
- the coil may be provided with Dacron fibers
- the coil is deployed through a
- microcatheter to the vascular site.
- microcoils are disclosed
- microcoil approach has met with some success in treating 1 small aneurysms with narrow necks, but the coil must be tightly packed 2 into the aneurysm to avoid shifting that can lead to recanalization.
- 3 Microcoils have been less successful in the treatment of larger aneurysms, 4 especially those with relatively wide necks.
- a disadvantage of microcoils s is that they are not easily retrievable; if a coil migrates out of the 6 aneurysm, a second procedure to retrieve it and move it back into place is 7 necessary.
- GDC Guglielmi Detachable Coil
- the GDC employs a 1 platinum wire coil fixed to a stainless steel guidewire by a solder 2 connection. After the coil is placed inside an aneurysm, an electrical 3 current is applied to the guidewire, which heats sufficiently to melt the 4 solder junction, thereby detaching the coil from the guidewire. The 5 application of the current also creates a positive electrical charge on the 6 coil, which attracts negatively-charged blood cells, platelets, and 7 fibrinogen, thereby increasing the thrombogenicity of the coil.
- Several 8 coils of different diameters and lengths can be packed into an aneurysm 9 until the aneurysm is completely filled. The coils thus create and hold a ⁇ thrombus within the aneurysm, inhibiting its displacement and its
- one aspect of the present invention is an embolic device, 4 comprising a thrombogenic medium, that is deployed in a soft, compliant 5 state, and that is controllably transformed into a rigid or semi-rigid state 6 after deployment.
- the present invention is an apparatus 7 for deploying the aforesaid embolic device in the interior of an aneurysm.
- Still another aspect of the present invention is a method for embolizing a 9 vascular site, particularly an aneurysm, using the aforesaid embolic 5 ⁇ device.
- the embolic device comprises a
- the material is then employed controllably to transform the transition material into a ⁇ o rigid or semi-rigid state, in which the material forms a stable, ⁇ thrombogenic "plug" inside the aneurysm.
- the material forms a stable, ⁇ thrombogenic "plug" inside the aneurysm.
- the material forms a stable, ⁇ thrombogenic "plug" inside the aneurysm.
- the is polymeric material may be exposed to a hardening agent that reacts
- the polymeric is material may be mixed with a water soluble, biocompatible plasticizer
- the embolic device comprises an
- the microcoil is deployed in the aneurysm with the transition
- the embolic device comprises an
- the embolic device is a ⁇ o highly-compliant chain-like structure comprising a plurality of ⁇ interconnected hollow links or segments. Each of the segments has a
- the hollow segments allow the embolic device to be inserted is into an aneurysm over a guide wire (not shown), if desired.
- the segments can be made of a metal and then fused
- 22 device comprises a flexible, elongate, hollow deployment tube having an
- deployment tube (or at least its distal end) is preferably made of a
- radiopaque material such as a biocompatible metal alloy
- the deployment tube with the embolic device
- fluid e.g., saline solution
- embolization methods and devices are 21 embolization methods and devices.
- the present invention is deployable within an aneurysm in a soft
- the location of the embolic device can be controlled
- Figure 1 is an elevational view of a preferred embodiment of an
- FIG. 7 is a cross-sectional view taken along line 2 - 2 of Figure 1 ,
- Figure 5 is an elevational view of one embodiment of an embolic is device in accordance with a second preferred embodiment of the present
- Figure 6 is a detailed view taken within the area of Figure 5
- Figure 7 is an elevational view of a portion of an embolic device
- Figure 8 is a cross-sectional view taken along line 8 - 8 of Figure 7;
- Figure 9 is an elevational view of a portion of an embolic device
- Figure 10 is a cross-sectional view taken along line 10 - 10 of Figure
- Figure 11 is an end elevational view of an embolic device in
- Figure 12 is a cross-sectional view taken along line 10 - 10 of Figure
- Figures 13-16 are cross-sectional views, similar to that of Figure 10,
- the apparatus 10 comprises a microcatheter 14 having an
- microcatheter 14 is of ⁇ conventional design, and many suitable microcatheters for the apparatus
- microcatheter 14 or at least its distal end, is
- a radiopaque material such as a biocompatible metal.
- the deployment tube 16 is a long, thin, hollow, highly flexible
- the deployment tube 16 has a
- the source contains a biocompatible liquid that can
- the distal end of the deployment tube 16 is provided
- the interior of the holding element 24 communicates with the
- proximally from the holding element 24 is formed as a highly flexible and
- the outer portion 28 concentrically surrounds an inner
- proximal tube section 34 which may be
- the aforementioned inlet fitting 22 is is connected to the proximal end of the proximal tube section 34.
- the embolic device 12 comprises a
- This transition material is initially in a soft, self-adherent, compliant
- the embolic device 12 may be injected at a 11 ⁇ temperature slightly above body temperature and then cooled into its rigid
- the polymeric material may be mixed with a
- a liquid such as a saline solution
- the transition material effects the transition by being cooled is from slightly above body temperature (e.g., from about 40 °C) to
- 21 device(s) 12 installed within the aneurysm 36 can be transformed to its
- a "transition fluid”, such as saline at the required temperature, can be
- FIG. 1 Figures 5 and 6 illustrate an embolic device 50 in accordance with
- 29 comprises a hollow metal microcoil 52, the interior of which is filled with
- the embolic device 50 is 13 ⁇ rigidified by the transformation of the material of the core 54 from its soft,
- an embolic device 50' comprises a hollow ⁇ metal microcoil 52', the distal end of which is closed by an end cap 56.
- the device 50' lacks a core. Instead, when the microcoil 52' is inserted ⁇ o into an aneurysm, but before it is detached from the deployment tube 16, ⁇ a flowable transition material is injected into the interior of the microcoil
- an embolic device 50 comprises a hollow metal
- microcoil 52 having an end cap 56" closing its distal end.
- 27 52" has a plurality of apertures 62 along its length, only one of which is
- the apertures 62 provide additional paths for the
- an embolic device 70 in accordance with this third embodiment is a
- Each socket 74 is dimensioned to receive the ball 76
- the electric current can be applied through the
- embolic device 70' is a chain-like structure comprising a plurality of
- the modification comprises an
- an embolic device 70' is a ⁇ o highly-compliant chain-like structure comprising a plurality of ⁇ interconnected links or segments 72", each of which is hollow.
- the segments 72" has a slotted, mushroom-shaped head portion 80, and a
- socket portion 82 that is shaped and dimensioned to receive the head
- the hollow segments 72" allow is the embolic device 70'" to be inserted into an aneurysm over a guide wire
- 17 material 84 (Fig.16) is injected, while in a flowable state, into the hollow is interior of the device 70'", and the transformation of the device 70" from a
- the segments 72" can be made of a metal
- a presently preferred material for use in the present invention constitutes a microcrystalline wax composition that is of the appropriate ⁇ semi-rigid consistency a few degrees above body temperature, but
- waxes are, generally speaking, fatty acids having more than 12 ⁇ carbon atoms and a straight alkyl chain.
- a microcrystalline wax material is, generally speaking, fatty acids having more than 12 ⁇ carbon atoms and a straight alkyl chain.
- Another presently preferred material for use in the present is invention is cellulose acetate polymer that is softened with ethyl lactate or
- 17 materials are a class of polyurethane based copolymers that are available is under the TECOPHILIC trademark from Thermedics Corporation.
- cyanoacrylate rigidifies by polymerization when contacted by vascular blood which seeps into the embolic device 70'" between the segments 72".
- biocompatible polymers and copolymers such as ethylene vinyl alcohol copolymers, polycarbonate urethane copolymers, and hydrogels may be formulated with a sufficient amount of biocompatible plasticizer, such as DMSO, to render them semi-rigid and suitable for application in the present invention through the catheters described above.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT99921377T ATE282362T1 (de) | 1998-04-28 | 1999-04-23 | Vorrichtung zur vaskularen embolisation |
DE69921979T DE69921979T2 (de) | 1998-04-28 | 1999-04-23 | Vorrichtung zur vaskularen embolisation |
JP2000545447A JP4376458B2 (ja) | 1998-04-28 | 1999-04-23 | 血管塞栓形成のための装置及び方法 |
CA002330136A CA2330136C (en) | 1998-04-28 | 1999-04-23 | Apparatus and method for vascular embolization |
BR9910027-4A BR9910027A (pt) | 1998-04-28 | 1999-04-23 | Aparelho e método de embolização vascular |
AU38609/99A AU764797C (en) | 1998-04-28 | 1999-04-23 | Apparatus and method for vascular embolization |
EP99921377A EP1073377B1 (en) | 1998-04-28 | 1999-04-23 | Apparatus for vascular embolization |
AU2003264582A AU2003264582B2 (en) | 1998-04-28 | 2003-11-26 | Apparatus and Method for Vascular Embolization |
AU2006249217A AU2006249217B2 (en) | 1998-04-28 | 2006-12-06 | Apparatus and method for vascular embolization |
AU2009201669A AU2009201669A1 (en) | 1998-04-28 | 2009-04-29 | Apparatus and method for vascular embolization |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/069,008 | 1998-04-28 | ||
US09/069,008 US6015424A (en) | 1998-04-28 | 1998-04-28 | Apparatus and method for vascular embolization |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999055239A1 true WO1999055239A1 (en) | 1999-11-04 |
Family
ID=22086109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/007399 WO1999055239A1 (en) | 1998-04-28 | 1999-04-23 | Apparatus and method for vascular embolization |
Country Status (11)
Country | Link |
---|---|
US (2) | US6015424A (pt) |
EP (3) | EP1518502B1 (pt) |
JP (2) | JP4376458B2 (pt) |
CN (1) | CN1200648C (pt) |
AT (2) | ATE359031T1 (pt) |
AU (4) | AU764797C (pt) |
BR (1) | BR9910027A (pt) |
CA (3) | CA2330136C (pt) |
DE (2) | DE69935814T2 (pt) |
ES (3) | ES2285319T3 (pt) |
WO (1) | WO1999055239A1 (pt) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000072781A3 (en) * | 1999-06-02 | 2001-03-01 | Sethel Interventional Inc | Intracorporeal occlusive device |
EP1091724A1 (en) * | 1998-07-02 | 2001-04-18 | Micro Therapeutics, Inc. | Vascular embolizing compositions comprising ethyl lactate and methods for their use |
EP1824414A2 (en) * | 2004-11-16 | 2007-08-29 | MicroVention, Inc. | Compositions, systems and methods for treatment of defects in blood vessels |
US8192480B2 (en) | 2007-12-21 | 2012-06-05 | Microvention, Inc. | System and method of detecting implant detachment |
EP2656822A1 (en) * | 2012-04-24 | 2013-10-30 | Urogyn B.V. | Applicator for delivering an occluding compound in a fallopian tube |
US9242070B2 (en) | 2007-12-21 | 2016-01-26 | MicronVention, Inc. | System and method for locating detachment zone of a detachable implant |
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